import {Injectable} from '@angular/core';
import {AppConfig} from '../config';
import {MenuFavorite} from '../entity/menu_favorite.model';
import {InterceptorService} from './interceptor/interceptor-service';

@Injectable()
export class MenuFavoriteService {
  private readonly param = 'menuFavorites';

  private get url(): string {
    return `${AppConfig.APP_RESTFUL}/${this.param}`;
  }

  constructor(private http: InterceptorService) {
  }


  /**
   * 创建菜单
   *
   * @param {Menu} menu
   * @returns {Promise<Menu>}
   * @memberof MenuService
   */
  public create(menuFavorite: MenuFavorite): Promise<MenuFavorite> {
    return this.http.post(this.url, JSON.stringify(menuFavorite))
      .toPromise()
      .then(res => {
        try {
          let result = res;
          switch (result.code) {
            case '200':
              return result.data as MenuFavorite;
            case '-1':
              throw new Error(result.message);
          }
        }
        catch (error) {
          this.handleError(error);
        }
      })
      .catch(this.handleError);
  }

  /**
   * 批量更新菜单
   *
   * @param {Menu} menu
   * @returns {Promise<Menu>}
   * @memberof MenuService
   */
  public batchUpdate(menuFavorites: MenuFavorite[]): Promise<MenuFavorite[]> {
    const url = `${this.url}/sysMenuFavorites`;
    return this.http.put(url, JSON.stringify(menuFavorites))
      .toPromise()
      .then(() => menuFavorites)
      .catch(this.handleError);
  }

  /**
   * 批量删除
   *
   * @param {number[]} menuIds
   * @returns {Promise<boolean>}
   * @memberof MenuService
   */
  public batchDelete(favoriteIds: number[]): Promise<boolean> {
    const apiUrl = `${this.url}?items=${favoriteIds}`;
    return this.http.delete(apiUrl)
      .toPromise()
      .then(response => {
        try {
          let result = response;
          switch (result.code) {
            case '200':
              return true;
            case '-1':
              throw new Error(result.message);
          }
        }
        catch (error) {
          throw error;
        }

      })
      .catch(this.handleError);
  }


  private handleError(error: any): Promise<any> {
    return Promise.reject(error.message || error);
  }

}
